Understandable, it can be made easily enough but unfortunately the laboratory hood isn’t operational.
If we had a operational fume hood, and pump for a fractional distillation setup I could make the fuming nitric acid for you.
I know we have the fractional distillation glassware and I think sulfuric acid. Just need a nitrate salt as far as reagents/glassware requirements go.
In regards to buying it, I’m sure you know that any vendor is going to charge the hazardous chemical shipping fee. For smaller quantities you can get around it but with 0.5L to 1L quantities I certainly don’t know any vendor that will do it.